This part of GOV.UK is being rebuilt – find out what beta means

HMRC internal manual

Customs Authorisation and Approval

Overview of customs regimes and procedures requiring prior authorisation or approval: Box 18 Transit simplifications

Box 18 of a transit declaration should identify the means of transport.

The principal of the transit movement can be authorised to leave this box blank where the goods are carried in containers.

If you are currently authorised for this simplification you can continue to use your current authorisation until you are re-authorised or until 1 May 2019 whichever date is earlier. 

Further details will be included in later editions of this Manual.